B12-analogs found in plantfoods dont have intrinsic factors for assimilation!Anyone suffering from B12 symptons should go to there DR. and have a B12 shot imediatly!This will eliminate symptons and raise energy levals dramaticaly along with overall quality of LIFE!Suffering illness for the sake of dietary preferance is deep in the realm of foolishness.The question of assimiability of plantbased B12 is a highly debatable one.But not worth suffering over to say the least.Health and wellbeing should allways take presadince in ones life.There are some interesting articles on this subject at beyondvegan.com.Be healthy be green be wise!!!